own. this will likely be the last birthday they celebrate together. >> humans don't do that and it's kind of scary when you go out on your own. >> reporter: they'll be sent to zoos around the country perhaps around the world but they'll always share this memory. now if you have a cat at home it probably doesn't need as much food as a lion, but before you prepare the next snack, here's a list of five things the site web md says to never feed your cat. first, tuna, it might be tempting but it doesn't have the nutrients your kitty needs. next, milk. cats actually don't process dairy foods well and that can upset their tummies. also on the list -- and lastly, dog food. but if you're in a pinch, don't worry about it. still, using the same food for your dog and your cat could leave your cat malnourished. now you know.